Description: Highly efficient solar cells convert to solar power into free electric energy. Multi-functional solar panel can charge your 3.7V battery garden light or other electronic devices. Safe reliable and energy-saving monocrystalline silicon solar cell can give you a wonderful new charging experience. Features: [High Conversion Efficiency]Highly efficient solar cells convert up to 19.5% of solar power into free electric energy. [Eco-friendly]A solar panel will lower the costs on your power bill and help curb your carbon emissions. [Useful]Polycrystalline silicon panels with DC port have the highest energy efficiency and are space efficient for the power they output. [IP65 Water-proof Solar Panel]Environmental and water-proof solar panel with long lasting material provides long lifespan. [Widely Applicable]Widely used in rural roads residential roads sidewalks industrial parks landscape lighting scenic spots parks gardens streets squares etc. Specifications: Material: Polycrystalline Silicon Color: Black Peak power: 3W Working voltage: 5V(Can be used to charge 3.7V battery) Output current: 0-600mA DC Port： 5521 Operating temperature: 0 to +60℃ Application: Lamp Fan Pump etc Occasion: Outdoor Camping Garden etc Cable Length: 300cm / 9.84ft Product Size: 17*13cm / 6.69*5.11inch Package Size: 18.5*22.5*2cm / 7.28*8.85*0.78inch Package Weight: 129g / 0.28lb Package List: 1 * Solar Panel